“PEMANFAATAN FLY ASH BATU BARA UNTUK KEBUTUHAN RANTAI PASOK BAHAN KOSTRUKSI”. Journal of Sustainable Civil Engineering (JOSCE) 5, no. 02 (October 18, 2023): 159–165. Accessed June 16, 2025. https://www.lppm-unbaja.ac.id/ejournal/index.php/josce/article/view/2857.